CVE-2018-0495
At a glance
- Severity
- Not available
- EPSS
- EPSS 0.87 % · percentile 59 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- debian
- NVD status
- Modified
Description
Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign function in cipher/ecc-ecdsa.c, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | MEDIUM 4.7 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | LOW 1.9 | AV:L/AC:M/Au:N/C:P/I:N/A:N | NVD · nvd@nist.gov (Primary) |
Weaknesses (CWE)
European references
- ENISA EUVD · EUVD-2018-1318
- GCVE · GCVE-0-2018-0495
CERT-FR advisories
- CERTFR-2023-AVI-1015 — Multiples vulnérabilités dans les produits Siemens · cert.ssi.gouv.fr
- CERTFR-2022-AVI-267 — Multiples vulnérabilités dans Juniper Networks Junos Space · cert.ssi.gouv.fr
- CERTFR-2018-AVI-589 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*< 1.7.10cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*≥ 1.8.0 < 1.8.3cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*cpe:2.3:a:redhat:ansible_tower:3.3:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*cpe:2.3:a:oracle:traffic_director:11.1.1.9.0:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 | affected Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 |
References
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=9010d1576e278a4274ad3f4aa15776c28f6ba965
- http://www.securitytracker.com/id/1041144
- https://usn.ubuntu.com/3850-1/
- http://www.securitytracker.com/id/1041147
- https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/
- https://usn.ubuntu.com/3689-1/
- https://lists.gnupg.org/pipermail/gnupg-announce/2018q2/000426.html
- https://usn.ubuntu.com/3689-2/
- https://usn.ubuntu.com/3692-2/
- https://lists.debian.org/debian-lts-announce/2018/06/msg00013.html
- https://www.debian.org/security/2018/dsa-4231
- https://access.redhat.com/errata/RHSA-2018:3505
- https://usn.ubuntu.com/3850-2/
- https://usn.ubuntu.com/3692-1/
- https://access.redhat.com/errata/RHSA-2018:3221
- https://dev.gnupg.org/T4011
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- https://access.redhat.com/errata/RHSA-2019:1297
- https://access.redhat.com/errata/RHSA-2019:1296
- https://access.redhat.com/errata/RHSA-2019:1543
- https://access.redhat.com/errata/RHSA-2019:2237
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |